Cracked Fake Fireplace logs.

My New Electric Fireplace With fake Logs Has A Crack In The Fake Logs. Very Noticeable. What Kind Of Black Filler Or Bond can I use to Fill the Crack that Will be safe to use in Electric Fireplace, That will take the Heat & be safe,Non Flammable? Thanks! This is the second insert.First didn't work At All. Don't want the hassle of Shipping it Again! Thanks Again!

Originally Big Lots. But They Couldn't help, Since have 30 Day To return Item. So I Sent Letter To Company & Got this Directly From Febo Yesterday.Trying Since April to get replaced. The Auto Won't Work On or off Have to Manually Turn it On or off. The Fake log Inside Also has A Crack Which is visible When fireplace is on. So Fustrated With The Problems. Thought About trying some kind of bond material To Fix logs, But It Still Doesn't work Properly! Thank you For Your Concern!